Meshed Vein Graft Patency Trial - VEST

External Mesh of Vein Grafts In Coronary Artery Bypass Grating: Early Patency and Clinical Outcome

The study hypothesis is that a meshed conduit made of safen vein allows a better patency at mid-long term than a safen vein alone.

To test this hypothesis the investigators plan a prospective, randomized study, comparing grafts to the diagonal, in cases of vessel diameter under 1.5mm. A control angiography will be performed one year after the operation.

Inclusion Criteria:

• Clinical Indication for elective Coronary Artery Bypass Grafting with at least one vein graft
• Coronary artery with critical stenosis (over 70%)

Exclusion Criteria:

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